A few weeks ago, it was announced that the online class Crash Course was going to be having a World History course.
Recently, the YouTube channel has added a chemistry course. The video series is currently on its fifth episode, which talks about the electron.
The chemistry course has covered topics, such as conversion, the nucleus and the periodic table.
The host of the science classes on Crash Course, Hank Green, is a a blogger, singer/songwriter, and is most known for the Vlogbrothers channel, which he runs with his brother, John Green.